(3) باب كَمِ الْوِتْرُ
Narrated AbuAyyub al-Ansari:
The Prophet (ﷺ) said: The witr is a duty for every Muslim so if anyone wishes to observe it with five rak'ahs, he may do so; if anyone wishes to observe it with three, he may do so, and if anyone wishes to observe it with one, he may do so. (ES)
Reference (ES): Sunan Abi Dawud 1422 (ES)
In-book reference (ES): Book 8, Hadith 7 (ES)
English translation (ES): Book 8, Hadith 1417 (ES)